Credit card fraud prevention techniques are disclosed in which the authorization of a payment card may be performed using information obtained from a mobile device (e.g., a smart phone) associated with a user who initiates a point-of-sale payment card transaction. In one implementation, a device may receive a request for authorization of a payment associated with a payment card; and obtain location information relating to a location of a mobile device associated with a user of the payment card. The device may determine, based at least on a location of the point-of-sale terminal and the location of the mobile device, whether to authorize the request for authorization of the payment.